i2c: npcm7xx: Add check for platform_driver_register

As platform_driver_register() could fail, it should be better
to deal with the return value in order to maintain the code
consisitency.

Fixes: 56a1485b102e ("i2c: npcm7xx: Add Nuvoton NPCM I2C controller driver")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Acked-by: Tali Perry <tali.perry1@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

diff --git a/drivers/i2c/busses/i2c-npcm7xx.c b/drivers/i2c/busses/i2c-npcm7xx.c
index 5960ccd..aede9d5 100644 (file)
--- a/drivers/i2c/busses/i2c-npcm7xx.c
+++ b/drivers/i2c/busses/i2c-npcm7xx.c
@@ -2372,8 +2372,7 @@ static struct platform_driver npcm_i2c_bus_driver = {
 static int __init npcm_i2c_init(void)
 {
        npcm_i2c_debugfs_dir = debugfs_create_dir("npcm_i2c", NULL);
-       platform_driver_register(&npcm_i2c_bus_driver);
-       return 0;
+       return platform_driver_register(&npcm_i2c_bus_driver);
 }
 module_init(npcm_i2c_init);